This. I've won several games at a lower ELO by farming some gold than backdooring on someone such as Udyr or Tryndamere. And your team will scream to have you reported for ignoring the pushing team instead of noticing they are sending 1 to 2 people to try and stop you, who then die to you, as you push towers.
There was one game though that wasn't a back door come back. I was playing Irelia and the opposing team was mocking us as they were winning and something inside me snapped. I farmed gold, finished my build and I began winning 1v2-4 fights and slowly pulling the game back. As I started dominating, my team started playing a little better and getting more excited. The enemy team was yelling in chat to kill the damn Irelia.
This was years ago though. When I finally clawed my way to gold I lost all desire to play the game.